linux-kernel - Re: [v2.6.26] what's brewing in x86.git for v2.6.26

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Message-ID: <87zlrshjtz.fsf@basil.nowhere.org>
Date:	Thu, 17 Apr 2008 12:11:36 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Andrew Morton <akpm@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>, linux-kernel@...r.kernel.org,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [v2.6.26] what's brewing in x86.git for v2.6.26

Andrew Morton <akpm@...ux-foundation.org> writes:
>
> Does it really really really need to consume one of our few remaining page
> flags?  We'll be in a mess when we run out.

No we're not. Just the (imho always misguided) "encode zone/node number 
into flags" optimization has to be removed again or made 64bit only.
Then there will be plenty of flags again.

Really I see no real reason this can't be done with a small hash table
again like x86-64 originally did.

-Andi
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